Multilayer single-dose easy open bottle with pe/pet/pp configuration and pre-cut top

ABSTRACT

In the alcohol market or in the liquor industries, it is common to find that the packaging activity is carried out in glass bottles and on some occasions in PET (POLYETHYLENE TEREFALATE) and PP (POLYPROPYLENE) type containers. In the case of these latter packages, there are problems of conservation of quality, aroma and flavor, since they give off particles because they are not completely resistant to alcohol. Now, glass bottles are the most used since thanks to their 10 barrier property they preserve the flavor and quality of these kinds of drinks for longer, maintaining the level of alcohol, aroma and flavor from bottling but having serious transport and packaging problems.The present invention provides a bottle of a new multilayer material in 15 that is packaged in a smaller dose than conventional ones, also called single-dose liquor or spirits, in which the preservation of the liquor is guaranteed for a prolonged period thanks to the incorporation of a technical solution that does not allow the release of particles in the drink for up to 27 months. Likewise, the new bottle has an easy open system that allows guaranteeing the non-reuse of the packaging to pack adulterated liquor, which is a frequent problem in the liquor industry.

RELATED APPLICATIONS

This patent claims priority of the application filed with the Superintendence of Industry and Commerce of the Republic of Colombia, with file number NC2018/0014032 entitled “EASY OPEN MULTI-LAYER SINGLE-DOSE BOTTLE WITH A PE/PET/PP CONFIGURATION AND A PRE-CUT AT THE TOP” filed on Dec. 21, 2018. Disclosures from the Colombian application are incorporated into this document in its entirety.

TECHNICAL FIELD

This application relates to the engineering sector, in particular packaging engineering.

BACKGROUND OF THE INVENTION

In the alcohol market or in the liquor industries, it is common to find that the companies that produce these beverages carry out the activity of packaging in glass bottles—usually in 750 and 375 milliliters presentation—and sometimes in PET (POLYETHYLENE 30 TEREFALATE) and PP (POLYPROPYLENE). In the case of these latter packages, there are problems of conservation of quality, aroma and flavor, in addition to affecting the quality of the ethyl alcohol content of the spirit drink, since this type of material gives off particles because it is not completely resistant to alcohol.

Thus, glass bottles are the most used in this industry thanks to their barrier property that preserves the flavor and quality of this kind of beverages for longer, maintaining the level of alcohol, aroma and flavor from bottling.

Another class of packaging for the packaging of alcohol or spirits is also known and they are flexible PET bags called flexible PET sachets, which are transparent envelopes filled with liquors such as whiskey, rum, vodka, among others in which their only material is PET.

Some patents related to the use of PET material with easy-open bottle systems are known, among them the application “Container with reinforced cannula and easy-open cap” number E51057258 (u)—2004-07-01 which corresponds to a container made up of by a container, a base that serves as a connecting element with a cannula, and a plug initially joined to the lower end of the cannula by an area that presents a perimeter weakening that facilitates its detachment, the whole forming a single body, characterized in that said plug is affected by a hole capable of housing the lower end of the cannula in which it has a widening due to divergence of its walls, so that once the cannula and the stopper have been separated due to breakage of the perimeter weakening, it is possible to cover and uncover the cannula as many times as desired, as its lower widening is retained inside the hole due to the pressure exerted by the walls of the same on it.

Another application is “Easily openable container and production method thereof E52047363 (t3)—1994-02-16, which is an easy-to-open container that comprises a multilayer container body that includes an inner layer and an adjacent layer in contact with the inner one, a recess portion and a flange and a cover member sealed by casting to the inner layer of the body of the multilayer container in the flange, where the inner and adjacent layers are separated from each other and have a resistance between them to the separation less than the resistance between the lid and the inner layer. The flange has two Circular grooves made in the inner layer, the multilayer container body and the lid are cast sealed between the two circular grooves, provided that a portion of the cast sealed area projects outward from the outer circular groove, and makes a depression in the inner layer at the outer edge of the projected portion of the melt-sealed area by pressing the inner layer through the lid, opens by separating the inner layer together with the lid from the adjacent layer of the container body multilayer between the two circular grooves and begins to easily break the inner layer by the depression in the outer edge 10 of the projected portion of the melt-sealed area.

The use of PET that is evidenced in the aforementioned patents is characterized for the most part by being an excellent container for fats and oils, but it is not a good alternative for the proper spirits or liqueurs, proof of this is that most companies have considerably reduced since the liquor stored there lasts only 6 months without organoleptic alterations of the product.

On the other hand, as far as what is known in the state of the art, that is, packaging in glass bottles, limits the possibility of packaging in smaller containers or bottles, since doing so increases the price and the product becomes inaccessible to the end consumer. It also happens that the consumer only wants to acquire a “shot” that has an average of 50 milliliters and does not have money to buy the 750 or 375 milliliter bottle being enough quantity for a single person, this situation generates inconveniences since people cannot buy smaller doses or of less content, single-dose type, since there is no container or bottle that can guarantee the prolonged conservation of these drinks in materials other than glass. Although the industries have addressed the market located at the base of the pyramid as an important market in which the mini dose plays a transcendental role in the offer of products—from soaps to deodorants—, in terms of liquors with mini packaging. doses have not achieved significant innovations which opens the industrial application of the invention.

The present invention solves the problem by providing a new bottle with an easy-open system of a new multilayer material in which a smaller dose, or single-dose of liquor or spirit drink is packaged, in which the preservation of the liquor is guaranteed for a prolonged period and considerable time, reducing the risks of drinking in bad condition for the consumer. Through a new multilayer material with which the packaging and bottling of alcoholic beverages is manufactured, a solution is provided to preserve the liquid for up to two years without changing its flavor and ethanol composition.

DISCLOSURE OF THE INVENTION

Polyethylene terephthalate, polyethylene terephthalate, polyethylene terephthalate or polyethylene terephthalate (better known by its acronym in English PET, polyethylene terephthalate) is a type of plastic widely used in food packaging, whether these are snacks, prepared meals, dairy products, as well as drinks in general, thanks—among other things—to their properties related to high resistance and acceptable barrier to CO2, humidity and O2.

Given its widespread use, alcoholic beverages for human consumption packaged in PET bottles are known on the market. This fact presents problems such as the change in the physicochemical composition of the beverage stored there.

Containers for alcoholic beverages other than glass are usually tretapack in the case of wines and/or tetrapack and PET for other distilled beverages, the latter, when used in single doses of a maximum of 50 milliliters, do not have ergonomic shapes that allow their use and packaging comfortably, in addition the opening must always be done with scissors or some sharp element in the case of the bags, a situation that makes it difficult for the consumption of the drink and subjects it to the buyer having an instrument to open them.

On the other hand, these packages do not provide the possibility of standing up like a glass bottle, given for example that the flexible PET bags are bags, and not bottles.

Some single-dose beverage packages that exist in the market are also manufactured in two parts, or they are joined through heat or thermoformed on the front and on the back, generating waste because the forms of these packages are previously exempted in molds, when divided into two parts, generates surpluses of the used material, causing even more contamination.

So there is no single-dose bottle for alcoholic beverages that offers the preservation of the liquor inside for more than 6 months, which has a negative impact on the liquor industries since they cannot produce inventory due to the short duration of the product. Likewise, the experience of the final consumer is also affected whenever beverages in PET containers experience a change in taste and the modification of the ethyl component, because the alcohol concentration changes and there is a loss of organoleptic qualities that are normally found in drinks packed in glass bottle.

Thus it is established that the currently known bottles for packaging alcoholic beverages in single doses present the following problems:

They only use a thick PET layer, causing contamination of the beverage.

-   -   It is difficult to open, which must be done with scissors or,         depending on the hardness of the material, they must have a         screw-type lid.     -   The packages in which they are stored for sale are bags and not         bottles, which takes up more space and more storage costs, in         addition to the difficulty of transporting large quantities         precisely because they are bags generally in the form of shampoo         sachets.     -   Due to the type of product, the user experience is affected and         causes rejection in its consumption, which affects sales for the         industry.

The present invention solves these problems since it provides a new, easy-open bottle of a new material for the packaging and distribution of single-dose bottles of liquor or spirits, which allows a duration of the content for a time greater than that known in the state of the art, that is, up to 2 years plus the shape allows the bottle to stand upright.

The present development is composed of 3 layers which provide the following advantages to the new bottle:

The first layer of polyethylene PE, a second layer of Polyethylene PET Polyerephthalate and the last layer of Polypropylene PP, which form a new material that allows the preservation of the alcoholic beverage intact for up to 27 months, the invention also has an easy opening system in its same structure, so it is no longer necessary for the consumer or end customer to open the bottle with scissors or other sharp elements that present risk to him and risk of damaging the bottle. Furthermore, after opening the bottle it is not possible to reuse it, which allows solving the problem of adulterated liquors that are generally repackaged in glass bottles due to the imperceptibility of their reuse.

On the other hand, the invention is a bottle configured in its lower part to remain standing, that is, it is not a bag with the difficulties of handling and packaging, but a bottle that is easy to carry and pack.

The solution provided by the present invention is the combination of 3 layers of plastic, specifically PE, PET and PP which produce a surprising effect since they result in the duration of the bottled spirit liquid for a longer time, when they last the longest in a PET packaging is 6 months, and it preserves the product without changing its flavor, so that each layer of material in the bottle fulfills a specific function for the preservation of the product.

PE Layer 1 is the one that is in contact with the alcohol-polystyrene, due to its properties there is no detachment of particles and contamination.

PET Layer 2 is the barrier that allows it not to evaporate or lose the alcohol.

PP Layer 3 is the one that allows the printing of brands and labels in very good resolution and duration. Said printing is mirror type, that is, the printing is made on the inside of this last layer, which prevents the detachment of the printing and adulteration of the product brand. Additionally, it contains a pigment-type attachment that allows the protection of alcohol against ultraviolet rays.

EXPLANATION OF THE INVENTION Brief Description of the Drawings

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part of said description, in which, with an illustrative and non-limiting nature, the following has been represented:

FIG. 1: Arrangement of the three layers of the material of the new bottle.

FIG. 2: Pre-cut the top of the bottle to allow easy opening of the bottle.

FIG. 3: Indication of bottle opening.

FIG. 4: Base of the bottle, in which the shape of the indentation is observed to allow it to stand up.

DESCRIPTION OF THE PARTS

-   1. First PE layer of polyethylene known as Polyethylene blown film -   2. Second layer, polyethylene terephthalate PET known as Poly     ethylene terephthalate -   3. Third and last layer, PP Polypropylene known as cast     polypropylene film -   4. Upper precut to allow opening of the bottle -   5. Slit in the base of the bottle

PREFERRED EMBODIMENT OF THE INVENTION

The present invention consists of the following parts

-   -   A first PE layer (1) of polyethylene known as Polyethylene blown         film     -   A second layer, PET (2) of polyethylene terephthalate known as         Poly ethylene terephthalate     -   A third and final layer, PP (3) Polypropylene known as cast         polypropylene film     -   An upper pre-cut (4) to allow the opening of the bottle     -   An indentation in the base of the bottle (5)     -   An upper pre-cut (4) to allow the opening of the bottle

The present invention provides a new bottle with a new material for the packaging of alcoholic beverages in single-dose presentation in which the material of the invention is composed of 3 layers arranged in a specific order which have functions within the invention and together they produce a unique and new effect not previously known in the state of the art.

These layers have the function of a cava for liqueurs, due to the properties of their material, that is to say that the liquor through the new material revealed creates a dark chamber in which the alcohol packed there is preserved intact.

The first layer, PE (1) of polyethylene known as Polyethylene blown film is characterized by preventing the detachment of particles and contamination of the alcoholic beverage, this layer prevents the change of flavor of the liquor and is the inner layer that is in direct contact with the drink, the polyethylene is characterized for having a high chemical resistance which allows it not to be attacked or affected by alcohol.

The second layer, PET (2) of polyethylene terephthalate known as Polyethylene terephthalate acts as a barrier against light, prevents it from evaporating and losing the alcohol in the alcoholic beverage, it is also the layer that provides the bottle with firmness and stability to allow its resistance and to remain standing.

The third and last layer, PP (3) Polypropylene known as cast polypropylene film, has a thermal resistance at high temperatures and being the outermost layer provides extra protection against thermal changes, also due to its exterior and interior texture it lends itself to the printing of the high-resolution product labeling, where said printing is mirror-like, that is, it is printed on the inner face of this last layer, which prevents detachment and color change due to the product rubbing against other surfaces. This last layer also has an attachment type 25038-59-9 that protects alcohol or drink from ultraviolet rays, making the material resistant to light. This light protective pigment can be EU: 201-375-5.

The layers of the invention have a total sum of 330 microns, where PE (1) has a dimension of 250 microns, PET (2) a dimension of 50 microns 20 and PP (3) a dimension of 30 microns, in which each thickness is determined by the function that each one fulfills for the preservation of the alcoholic beverage.

In another embodiment of the invention it is observed that the layers of PE (1), PET (2), and PP (3) material can have the following thicknesses: a) 300, 50, 30 b) 25 300, 55, 35 or c) 430, 55 and 40 microns, respectively.

Likewise, said combination of layers in which PE (1) can be CAS 9002-88-4, PET (2) can be CAS 25038-59-9, and PP (2) can be CAS 9003-07-0 as a result a new material. The duration of the alcoholic beverage has been demonstrated through laboratory stability studies supported by the ONAC (National Accreditation Body of Colombia) in which an accelerated aging test was carried out in which the speed of physical decomposition is increased and/or chemistry of the product by creating environmental conditions of extreme conservation to determine the physical decomposition time taking into account the type of material and the content, and identify the kinetic parameters of the decomposition processes and predict the useful life of the product under conditions of normal storage.

The accelerated stability study was carried out on samples of the product in the bottle of the invention, single-dose bottles, specifically with Aguardiente and Rum liquor from the Industria Licorera de Caldas.

The accelerated stability study was carried out by applying an extreme temperature of 40° C.+2° C. and RH 75%+5% relative humidity to the samples, according to the following table:

Time Storage conditions (days) 40° C. ± 2° C. and RH 75% ± 5% Date 0 Sample evaluated at the start of the study, 2018 Jul. 27 after 0 days 10 Sample evaluated after 10 days 2018 Aug. 6 20 Sample evaluated after 20 days 2018 Aug. 16 31 Sample evaluated after 31 days 2018 Aug. 27

Likewise, a natural stability study was carried out before and after study on the samples stored at temperatures of 25° C.+2° C. and 60%+5% relative humidity:

Time Storage conditions (days) 25° C. ± 2° C. and RH 60% ± 5% Date 0 Sample evaluated at the start of the study, 2018 Jul. 27 after 0 days 31 Sample evaluated after 31 days 2018 Aug. 27

The aspects to be evaluated were the physicochemicals of the alcohol throughout the study time, the organoleptic or sensory aspects such as the appearance, color, odor throughout the study time.

START DATE: 2018 Jul. 27 TIME IN ATTRIBUTE CAMERA APPEARANCE/ (Days) DATE TEXTURE ODOR COLOR FLAVOR REMARKS 0 2018 Jul. 27 8 8 8 N.A It is taken as a reference sample to evaluate the sensory characteristics of the product in the rest of the stability times. 10 2018 Aug. 6 8 8 8 N.A The sensory characteristics of appearance, color and odor do not show significant changes compared to the Reference product. 20 2018 Aug. 16 8 8 8 N.A The sensory characteristics of appearance, color and odor do not show significant changes compared to the Reference product. 31 2018 Aug. 27 8 8 8 N.A The sensory characteristics of appearance, color and odor do not show significant changes compared to the Reference product. 31 Natural 2018 Aug. 27 8 8 8 N.A The sensory characteristics of appearance, color and odor do not show significant changes compared to the Reference product. APPEARANCE: Color: Taste: Odor: 6-8 Very similar to reference 6-8 similar to reference 6-8 similar to reference 6-8 similar to reference 3-5 Medium similar 3-5 Medium similar to reference 3-5 Medium similar to reference 3-5 Medium similar to reference 0-2 slightly similar to reference 0-2 slightly similar to reference 0-2 slightly similar to reference 0-2 slightly similar to reference Decision criterion: with an average score lower than 5, the accelerated stability storage time is suspended and with this time the projection is made

Where 8 is the maximum rating against possible variations, which indicates that the product does not suffer alterations in its physicochemical characteristics.

The result of the analysis shows that when faced with extreme temperatures, the composition of the single-dose bottle of the invention did not significantly alter the quality of the product or alcoholic beverage housed in it.

STUDY START DATE: 2018 Jul. 27 STORAGE CONDITIONS: 40° C. ± 2° C. AND 75% ± 5% RH Physicochemical analysis TIME EVALUATION Organoleptic Characteristics Alcoholic degree (Days) DATE Appearance Color Odor Minimum 35.0% 0 2018 Jul. 31 Translucent liquid, homogeneous, Yellow Product 36.76 free of foreign particles characteristics 10 2018 Aug. 6 Translucent liquid, homogeneous, Yellow Product 36.20 free of foreign particles characteristics 20 2018 Aug. 16 Translucent liquid, homogeneous, Yellow Product 36.15 free of foreign particles characteristics 31 2018 Aug. 27 Translucent liquid, homogeneous, Yellow Product 35.82 free of foreign particles characteristics 31 Natural 2018 Aug. 27 Translucent liquid, homogeneous, Yellow Product 36.60 25° C. ± 2° C. and free of foreign particles characteristics 60% ± 5% RH *According to the Standard: Specifications provided by the customer ₁Methods accredited by ONAC Certificate of Accreditation 10-LAB-053 Renewal Date 2014 Sep. 5 Under ISO/IEC 17025: 200 Standard

Against the projection of the useful life in terms of accelerated aging conditions of 40° C.+2° C. and RH 75%+5%, characteristics such as alcoholic degree were evaluated, in

1. Data Projection and Analysis

-   -   EVALUATED PARAMETER: Alcoholic degree

Storage time Alcoholic degree (Days) Minimum 35.0% 0 36.76 10 36.20 20 36.15 31 35.82

Simple Regression—Alcoholic Grade vs. Time

Dependent Variable: Alcoholic Grade Independent Variable:

Linear Time: Y=a+b*X

Coefficients

Minimum Squared Standard Statistical Parameter Estimated Error T Value-P Intercept 36.663 0.124702 294.006 0 Slope −0.0287 0.00666558 −4.3057 0.0499

Variance Analysis

Middle Source Sum of Squares GI Square Reason-F Value-P Model 0.411845 1 0.411845 18.54 0.0499 Residual 0.04443 2 0.022215 Total (Corr.) 0.456275 3

Correlation Coefficient=−0.950066

R-squared=90.2625 percent

R-squared (adjusted for g.l.)=85.3937 percent

Standard error of the est. =0.149047

Mean absolute error=0.088

Durbin-Watson statistic=2.98328 (p=0.6907)

Auto correlation of residuals in lag 1=−0.60117

The output shows the results of fitting a linear model to describe the relationship between alcoholic strength and time. The equation of m tight model is

Alcoholic degree=36.663−0.0287*time

Since the −P value in the ANOVA table is less than 0.05, there is a statistically significant relationship between alcoholic strength and time with a 95% confidence level.

The R-Squared statistic indicates that the adjusted model explains 90.2625% of the variability in Alcoholic Grade. The correlation coefficient is equal to −0. 950066 indicating a relatively strong relationship between the variables

Predicted Values

95.00% 95.00% Predictions Limit Prediction Limit Confidence X Y Lower Upper Lower Upper 0 36.663 35.8269 37.4991 36.1265 37.1995 30 35.802 34.9659 36.6381 35.2655 36.3385 57 35.0271 33.6253 36.4289 33.7806 36.2736 58 34.9984 33.5719 36.4249 33.7242 36.2726

This table shows the predicted values for Alcoholic Grade using a fitted model. In addition to the best predictions, the table shows:

(1) 95.0% forecast intervals for new observations

(2) 95% confidence intervals for the mean of several observations

The prediction and confidence intervals correspond to the internal and external bounds on the graph of the fitted model.

As a result, the study carried out by the laboratory indicated that the product, under normal conditions of temperature and relative humidity, remained without significant modifications compared to the sensory and physicochemical characteristics evaluated.

During the accelerator study of extreme conditions of temperature and relative humidity, the product maintains the evaluated quality characteristics within specifications; sensory characteristics such as color, smell and appearance were monitored. The alcoholic degree was taken as an indicator to make the calculation of the projection of the useful life time, as it is a priority condition for this type of products, which remained within the established specification.

In conclusion, taking into account the stability of the formulation, both from the sensory and physicochemical point of view, a shelf life of 27 months and a reliability of 95% is established for the product in the bottle of the invention provided that the product remains in the bottle and it is not damaged or altered, that is, as long as it is not opened and the alcoholic beverage is packaged in a bottle with the new multilayer material used in the accelerated stability study.

Another study carried out on the invention is the technical test of global and specific migration, which is required by INVIMA for the material to be accepted to accommodate liquid or solid content that is for human consumption.

In this global and specific migration test, the presence of metals and acids is measured on the tested material, in this case the multilayer material of the bottle of the invention. These laboratory tests determined that the material of the invention complies with the limits of global migration and specific migration of metals (Barium, Cobalt, Copper, Iron, Lithium, Manganese, Zinc, Aluminum, Nickel), antimony trioxide, monoethylene glycol, diethylene glycol, terephthalic acid, isophthalic acid, acetaldehyde, 1-hexene and 1-octene established in Commission Regulation (EU) No. 10/2011 of Jan. 14, 2011, on plastic materials and objects intended to come into contact with food for the simulant tested under the exposure conditions evaluated and consequently complying with the analysis of toxicological risks due to migration of packaging material to the product; according to the provisions of Article 32, Decree 1686 of 2012 and Resolution No. 683 of 2012, according to the tests of certified Colombian and European laboratories, it was determined that the packaging complies with these parameters and is suitable for human consumption.

Specifically, the migration study for single-dose bottle of the new PE/PET/PP three-layer composite material indicated:

SAMPLE: 1 LAMINATED SINGLE-DOSE CONTAINER OF 3 LAYERS PE/PET/PP RON VIEJO DE CALDAS. AGUARDIENTE XS. AGUARDIENTES AND AGUARDIENTE L. Taker: customer. Units: 1. Product: packaging materials

Assays Result Units Cadmium * <0.25 mg/kg PAQ015ICP-AES Lead * <0.75 mg/kg PAQ015 ICP-AES Mercury * <0.75 mg/kg PAQ015 ICP-AES Chromium * <0.75 mg/kg PAQ015 ICP-AES Global migration in ethanol 50% (v/v) UNE-EN 1186 Gravimetry Rule UNE-EN 1186-9 Contact form Filing Contact surface ratio 16.4 dm2/Kg Exposure temperature (T) 40″ C. Exposure time (t) 10 days Replica 1 <1.3 mg/dm² Replica 2 <1.3 mg/dm² Replica 3 <1.3 mg/dm² Average <1.3 mg/dm² Specific Migration of 9 Metals (Ba, Co, Cu, Fe, Li, Mn, Zn, Al, Ni) in 50% Ethanol (v/v)*PAQ385 ICP-MS

Contact form *1 Filing Contact surface/volume ratio * 16.4  dm²/Kg Exposure temperature (T) * 60° C. Exposure time (T) * 10 days Barium (Replica 1) * <0.01 mg/kg Barium (Replica 2) * <0.01 mg/kg Bathroom (Replica 3) * <0.01 mg/kg Barium (Average) * <0.01 mg/kg Cobalt (Replica 1) *  <0.005 mg/kg Cobalt (Replica 2) * <0 005 mg/kg Cobalt (Replica 3) *  <0.005 mg/kg Cobalt (Average) *  <0.005 mg/kg Copper (Replica 1) * <0.10 mg/kg Copper (Replica 2) * <0.10 mg/kg Copper (Replica 3) * <0.10 mg/kg Copper (Average) * <0.10 mg/kg Iron (Replica 1) * <0.10 mg/kg Iron (Replica 2) * <0.10 mg/kg Iron (Replica 3) * <0.10 mg/kg Iron (Average) * <0.10 mg/kg Lithium (Replica 1) * <0.02 mg/kg Lithium (Replica 2) * <0.02 mg/kg

SAMPLE: 1 LAMINATED SINGLE-DOSE CONTAINER OF 3 LAYERS PE/PET/PP RON VIEJO DE CALDAS, AGUARDIENTE XS. AGUARDIENTE S AND AGUARDIENTE L. Taker: customer. Units: L Product: packaging materials

Assays Result Units Lithium (Replica 3) * <0.02 mg/kg Lithium (Average) * <0.02 mg/kg Manganese (Replica 1) * <0.05 mg/kg Manganese (Replica 2) * <0.05 mg/kg Manganese (Replica 3) * <0.05 mg/kg Manganese (Average) * <0.05 mg/kg Zinc (Replica 1) * <0.10 mg/kg Zinc (Replica 2) * <0.10 mg/kg Zinc (Replica 3) * <0.10 mg/kg Zinc (Average) * <0.10 mg/kg Aluminum (Replica 1) * <0.10 mg/kg Aluminum (Replica 2) * <0.10 mg/kg Aluminum (Replica 3) * <0.10 mg/kg Aluminum (Average) * <0.10 mg/kg Nickel (Replica 1) * <0.01 mg/kg Nickel (Replica 2) * <0.01 mg/kg Nickel (Replica 3) * <0.01 mg/kg Nickel (Average) * <0.01 mg/kg Specific migration of antimony in ethanol 50% ethanol (v/v) * PAQ385 ICP-MS Contact form * 1 Filing Contact surface/volume ratio *  16.4 * dm²/Kg Exposure temperature (T) * 60″ C. Exposure time * 10 days Replica 1 *  <0.005 mg/Kg Replica 2 *  <0.005 mg/Kg Replica 3 *  <0.005 mg/Kg Average *  <0.005 mg/Kg Specific migration of monoethylene glycol and dieoleglycoi in ethanol 50% (v/v) * PAQ309 GC-FID Contact form * 1 Filing Contact surface/volume ratio * 16.4  dm2/Kg Exposure temperature (T) * 60° C. Exposure time (t) * 10 days Monoetilenghcol replica 1 * <3   mg/Kg Monoetilenghcol replica 2 * <3   mg/Kg Monoetilenghcol replica 3 * <3   mg/Kg Monoethylene glycol average * <3   mg/Kg Dietilenghcol replica 1 * <3   mg/Kg Oetilenghcol replica 2 * <3   mg/Kg Dietilenghcol replica 3 * <3   mg/Kg Dietilenghcol media * <3   mg/Kg Mean sum mono and diethylene glycol * 2 <6   mg/Kg Specific migration of terephthalic and isophthalic acid in ethanol 50% (v/v) * PAQ308 HPLC-PDA Contact form * 1 Filing Contact/volume surface ratio * 16.4  dm²/Kg Exposure temperature (T) * 60° C. Exposure time (t) * 10 days

From these tests it follows that the migration levels comply with the European standard UNE-EN 13130-1 since the maximum allowed concentration of lead, cadmium, mercury and hexavalent chromium must not exceed 100 mg/kg in weight, and the tests show that the levels are almost imperceptible compared to the maximum allowed.

For plastic materials and objects, the maximum is 10 mg/dm2, maximum limits that are not revealed in the study either, since the values obtained are the following:

Migration by material Values Barium 1 mg/kg Cobalt 0.05 mg/kg Copper 5 mg/kg Iron 48 mg/kg Lithium 0.6 mg/kg Manganese 0.6 mg/kg Zinc 5 mg/kg Aluminum 1 mg/kg Animonium (antimony) trioxide 0.04 mg/kg Monoethylene glycol and diethylene glycol 30 mg/kg Terephthalic acid 7.5 mg/kg Isophthalic acid 5 mg/kg acetaldehyde 6 mg/kg 1-hexene 3 mg/kg 1-Octene 15 mg/kg

In the same way, given these results on the study of global and specific migration, the Colombian control entity INVIMA approved the material as suitable for human consumption, differentiating it from the PET individually considered, establishing that this is a new material suitable for packaging products for human consumption.

So that the single-dose bottle built with the combination of the three PE/PET/PP layers, technically improves the conservation of the alcoholic beverages housed in it, likewise it keeps the drink isolated from the presence of metals such as barium, cobalt, copper, iron, lithium, manganese, zinc, aluminum, and acids.

The three layers are joined together under the lamination method, generating a single piece that is later simply bent, without cuts, or separate molds, but in a single mold and in a single sheet the shape is extruded and then injected with air and finally filled with the alcoholic drink.

The manufacturing steps of the bottle would be to take the three layers described, they are shaped, subsequently laminated, filled with liquid, stamped, sealed around the shape and the easy open that constitutes a pre-cut is located.

The base or lower part of the bottle, when formed in a single piece, has an oval-shaped slit (5) with an internal diameter whose measurement is 12 and 16 mm wide and between 14 and 20 mm long, and of The inner diameter dimensions are preferably 15 mm wide and 18 mm long.

In the formation of the container, greater hardness is observed in the layer of the upper part of the bottle, and in the lower part, the layer of the base of the bottle is thinner, because it expands in its formation.

This form of production generates a final technical effect on the bottle, which is to stand up, otherwise, if it were made up of two molds, its final shape would be a kind of flexible PET sachets or shampoo cushion.

From another aspect of the invention, the revealed bottle has an easy-open system located at its upper end that consists of a pre-cut (4) with a drilling depth dimension of 0.3 mm and a length of 12 mm, which allows the consumer with three simple movements (FIG. 3) open the bottle, without the need to use a cutting element, the opening movements are forward, backward and a turn to the right in the form of a tear.

Once the cut of the upper part that emerges from the bottle to access the liquid has been made, it is observed that the bottle does not remain with burrs, but that it remains polished and without imperfections. 

1. Easy open multilayer single-dose bottle, characterized in that it comprises: A first layer (PE) (1) of polyethylene material located on the inside of the bottle; a second PET layer (2) of polyethylene terephthalate that is located between the first and third layers, and a third and last PP layer (3) of Polypropylene that is outside the bottle, where the three layers are laminated to each other. The upper part of the bottle has a pre-cut (4) and an oval slit (5) at the base of the bottle.
 2. The bottle of claim 1, characterized by the oval slit having an internal diameter measuring 12 and 16 mm in width and between 14 and 20 mm in length.
 3. The bottle of claim 1, characterized in that the oval slit preferably has inner diameter dimensions of 15 mm wide and 18 mm long.
 4. The bottle of claim 1, characterized in that preferably the first PE layer (1) is CAS 9002-88-4, the second PET layer (2) is CAS 25038-59-9 and the third layer PP (3) is CAS 9003-07-0.
 5. The bottle of claim 1, characterized in that the PE (1), PET (2), and PP (3) layers have thicknesses of 250, 55 and 30 microns respectively.
 6. The bottle of claim 1, characterized in that the PE (1), PET (2), and PP (3) layers can have thicknesses of 300, 50, 30, or 300, 55, 35, or 430, 55, 40 microns respectively.
 7. The bottle of claim 1, characterized in that the last layer PP (3) may contain an attachment of the pigment type EU: 201-375-5.
 8. The bottle of claim 1, characterized in that the upper precut (4) has a drilling depth dimension of 0.3 mm and a length of 12 mm. 